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SECTION 07 92 00

JOINT SEALANTS

PART 1 - GENERAL

1.01 SUMMARY

A. Section Includes:1. Joint sealants for exterior building joints.2. Joint sealants for traffic-bearing surfaces.3. Structural silicone sealants.4. Joint sealants for interior joints.5. Precured silicone extrusions.6. Sealant primers.7. Joint backup materials and accessories.

1.02 REFERENCES

A. ANSI/NSF Standard 51 – Food Equipment Materials

B. ASTM C 510 – Standard Test Method for Staining and Color change of Single- or Multicomponent Joint Sealants

C. ASTM C 661 – Standard Test Method for Indentation Hardness of Elastomeric-Type Sealants by Means of a Durometer

D. ASTM C 719 – Standard Method for Adhesion and Cohesion of Elastomeric Joint Sealants under Cyclic Movement (Hockman Cycle)

E. ASTM C 834 – Standard Specification for Latex Sealants

F. ASTM C 881 – Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete

G. ASTM C 920 – Standard Specification for Elastomeric Joint Sealants

H. ASTM C 919 – Standard Practice for Use of Sealants in Acoustical Applications

I. ASTM C 1087 – Standard Test Method for Determining Compatibility of Liquid-Applied Sealant with Accessories Used in Structural Glazing Systems

JOINT SEALANTS 07 92 00 - 1[Footer Info] [Footer Info]

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J. ASTM C 1135 – Standard Test Method for Determining Tensile Adhesion Properties of Structural Sealants

K. ASTM C 1184 – Standard Specification for Structural Silicone Sealants

L. ASTM C 1193 - Standard Guide for the Use of Joint Sealants

M. ASTM C 1247 – Standard Test Method for Durability of Sealants Exposed to Continuous Immersion in Liquids

N. ASTM C 1248 – Standard Test Method for Staining of Porous Substrate by Joint Sealants

O. ASTM C 1311 – Standard Specification for Solvent Release Sealants

P. ASTM C 1330 – Standard Specification for Cylindrical Backing for Use with Cold Liquid-Applied Sealants

Q. ASTM C 1401 – Guide for Structural Sealant Glazing

R. ASTM C 1521 – Standard Practice for Evaluating Adhesion of Installed Weatherproofing Sealant Joints

S. ASTM C 1523 – Standard Test Method for Determining Modulus, Tear and Adhesion Properties of Precured Elastomeric Joint Sealants

T. ASTM D 412 – Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers–Tension

U. ASTM D 624 – Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers

V. ASTM D 695 – Standard Test Method for Compressive Properties of Rigid Plastics

W. ASTM D 794 – Practice for Determining Permanent Effect of Heat on Plastics (withdrawn)

X. ASTM D 3960 – Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings

Y. ASTM D 5893 – Standard Specification for Cold Applied, Single Component, Chemically Curing Silicone Joint Sealant for Portland Cement Concrete Pavements

Z. ASTM E 90 – Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements

AA. CDPH Standard Method v1.1 (California Specification 01350) – Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers

BB. Food and Drug Administration Regulation 21CFR177.2600 – Indirect Food Additives: Polymers; Rubber articles intended for repeated use



CC. SCAQMD Rule 1168 – South Coast Air Quality Management District Adhesive and Sealant Applications; amended January 7, 2005, effective July 1, 2005.

DD. SWRI Validation – SWR Institute Validated Products listing; Sealant, Waterproofing and Restoration Institute; http://www.swrionline.org/ValidatedSealants.

1.03 ACTION SUBMITTALS

A. Product Data: For each joint sealant, sealant primer and joint backup material indicated; manufacturer’s technical data, tested physical, performance properties and installation instructions. [Include sustainable design data.]

B. Samples for Initial Selection: Three color charts showing manufacturer’s complete range of colors available for each product exposed to view.

C. Samples for Verification: Three strips of cured sealants 1/2-inch (13 mm) diameter by 6-inch (150 mm).in size for each color of joint sealant required.

1.04 INFORMATIONAL SUBMITTALS

A. Qualification Data: For installer.

B. Product Test reports: For each joint sealant, tested by manufacturer.

C. Preconstruction Laboratory Adhesion Test Reports: Indicate which joint sealants and joint preparation methods resulted in satisfactory sealant adhesion to joint substrates.

D. Preconstruction Field Adhesion Test Reports: Completed Field Adhesion Test log; submit within [10] [__] days after completion of tests.

E. Field Adhesion Test Reports: For each joint sealant application tested.

F. Warranties: Sample of manufacturer’s [and installer’s] warranty.

1.05 QUALITY ASSURANCE

A. Installer Qualifications: Engage installers trained or qualified by manufacturer.

B. Source Limitations: Obtain each type of joint sealant from the same manufacturer.

C. Mockups: Install joint sealant in mockups required by other [sections] [portions of the Contract Documents] that are indicated to receive specified joint sealants in accordance with installation methods specified in this section

D. Preinstallation Conference: Convene conference at Project site before start of work in accordance with provisions of Section 01 30 00 Administrative Requirements.

1.06 PRECONSTRUCTION TESTING


http://www.swrionline.org/ValidatedSealants


A. Preconstruction Laboratory Testing: Before installing sealants, arrange for sealant manufacturer to perform the following test[s] on each combination of sealant, primer, joint substrate, backup and accessory:

1. Adhesion Testing: Utilize ASTM C 794 to determine whether primer is required for the cured sealant to achieve and maintain an optimum bond to the substrate.

2. Compatibility Testing: Utilize ASTM C 1087 to determine structural silicone sealant compatibility when in contact with glass and glazing gasket materials.

3. Stain Testing: Utilize ASTM C 1248 to determine the potential of staining when the sealant contacts [stone] [masonry] [_____] joint substrates.

4. Allow sufficient time for testing and analyzing test results without delaying the Work.5. Deliver to manufacturer recommended number and sizes of substrate samples for

testing.6. Report manufacturer’s recommendations for satisfactory sealant adhesion including

use of primers or substrate preparation techniques.7. Testing is not required if manufacturer provides data showing previous testing, not

older than 24 months, that indicates satisfactory adhesion[,] [compatibility][,] [absence of staining] [and] [acceptable tensile adhesion].

B. Preconstruction Field Adhesion Testing: Before start of work, test sealants using one of the following destructive field adhesion tests:

1. ASTM C 1193, Appendix X1.1.2. ASTM C 1521, Method A.3. Locate test joints where indicated or, if not indicated, as directed by Architect.4. Test each sealant, primer and joint substrate combination.5. Arrange for tests to take place in presence of sealant manufacturer’s authorized

personnel.6. Evaluate results and report whether sealant adhered to joint substrate during testing

or failed and mode of failure (adhesive or cohesive), if any. Include, test method used, sealant tested, Project location, joint size and substrate material, sealant backup, test date and name of person who conducted test.

7. Sealants not experiencing adhesive failure will be considered satisfactory. Do not use sealants that do not adhere to joint substrates during testing.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Store materials in original undamaged packaging, within temperature limits recommended by manufacturer; protect from direct sunlight.

B. Remove and replace sealants that cannot be installed within their stated shelf life.

1.08 FIELD CONDITIONS

A. Do not proceed with installation of joint sealants under the following conditions:1. When ambient and substrate temperature conditions are outside limits permitted by

joint sealant manufacturer.2. When joint substrates are wet.3. Where contaminants capable of interfering with adhesion have not been removed

from joint substrates.

1.09 WARRANTY



A. Refer to Section 01 78 00 Closeout Submittals for additional warranty requirements.

B. Installer’s Warranty: Provide installer’s standard form in which installer agrees to repair or replace joint sealants that do not comply with performance and other requirements specified in this section within the specified warranty period commencing at date of Substantial Completion.

1. Warranty Period: 2 years.

C. Manufacturer’s Warranty: Provide manufacturer’s standard material warranty commencing at date of Substantial Completion.

1. Polyurethane Joint Sealants: 5 years.2. Silicone Joint Sealants: 20 years.

D. Specified warranties exclude deterioration or failure of joint sealants from the following:1. Movement of the structure resulting in stresses on the sealant exceeding the sealant

manufacturer’s written specifications for sealant elongation and compression caused by structural settlement or errors attributable to design or construction.

2. Disintegration of joint substrates from natural causes (lightening, hurricane, tornado, fire, etc.) exceeding design specifications.

3. Mechanical damage caused by individuals, tools or other outside agents.4. Changes in sealant appearance caused by accumulation of dirt or other

atmospheric contaminants,

PART 2 - PRODUCTS

2.01 MANUFACTURERS

A. Manufacturer: Design is based on products manufactured by Pecora Corporation;165 Wambold Road, Harleysville, PA 19438; Toll Free Tel: 800-523-6688;Tel: 215-723-6051; Fax: 215-721-0286; Email: [email protected];Web: http://www.pecora.com.

B. Other Acceptable Manufacturers:1. <Insert Name of Manufacturer>.2. <Insert Name of Manufacturer>.

C. Substitutions: Requests for substitutions will be considered under the provisions of Section 01 60 00 – Product Requirements.

D. Substitutions: Not permitted.

2.02 MATERIALS, GENERAL

A. Compatibility: Provide joint sealants, backings, and accessory materials that are compatible with one another and with Project joint substrates.

B. VOC Content of Sealant and Primers: Provide joint sealants and sealant primers that comply with SCAQMD Rule 1168 for VOC content.

2.03 NONSTAINING SILICONE JOINT SEALANTS


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A. Nonstaining Silicone Sealants: Nonstaining to porous stone when tested in accordance with ASTM C 1248.

B. [Sealant #01]: Single-component, Non-sag, Nonstaining, Ultra-Low Modulus, Neutral Moisture-curing, Silicone Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O.2. Performance: Dynamic movement capability of plus 100 percent and minus 50

percent per ASTM C 719.3. Sustainability:

a. Volatile Organic Compound (VOC) Content: 98 g/L, per ASTM D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram

(0.002 milligram)/cu. m), per CDPH v1.1.4. Color: [As selected from manufacturer’s complete range] [Custom; match

Architect’s sample] [_____].5. Product: One of the following:

a. 890NST Non-Staining Ultra-Low Modulus Silicone Sealant.b. 890FTS Field Tintable, Non-Staining Silicone Sealant–Smooth Formula.

C. [Sealant #02]: Single-component, Non-sag, Nonstaining, Low Modulus, Neutral Moisture-curing, Silicone Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A, O.2. Performance: Dynamic movement capability of plus 50 percent or minus 50 percent

per ASTM C 719.3. Sustainability:



Architect’s sample] [_____].5. Product: 864NST.

D. [Sealant #03]: Single-component, Non-sag, Nonstaining, Low Modulus, Neutral Moisture-curing, Structural Glazing and Weather Seal Silicone Sealant:

1. Compliance:a. ASTM C 920, ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A, O.b. ASTM C 1184, Type S, Use G, O.

2. Properties:a. Ultimate Tensile Strength: 200 psi.b. Sealant Design Stress: 20 psi.

3. Performance: Dynamic movement capability of plus 50 percent or minus 50 percent per ASTM C 719.

4. Sustainability:a. Volatile Organic Compound (VOC) Content: 98 g/L, per ASTM D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram

(0.002 milligram)/cu. m), per CDPH v1.1.5. Color: [Black] [Tru-White] [Aluminum Stone] [Classic Bronze] [Translucent].6. Product: 895NST.

E. [Sealant #04]: Single-component, Non-sag, Nonstaining, Low Modulus, Neutral Moisture-curing, Textured Silicone Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A, O.





(0.002 milligram)/cu. m), per CDPH v1.1.4. Color: [As selected from manufacturer’s full range] [Custom; match

Architect’s sample] [_____].5. Product: 890FTS-TXTR.

F. [Sealant #05]: Single-component, Nonstaining, Low Modulus, Neutral-curing, Neutral Moisture-curing Sanitary Silicone Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A.2. Performance: Dynamic movement capability of plus 50 percent or minus 50 percent

when tested in accordance with ASTM C 719.3. Sustainability:


(0.002 milligram)/cu. m), per CDPH v1.1.4. Color: [As selected from manufacturer’s full range] [Custom; match

Architect’s sample] [_____].5. Product: 898NST.

2.04 STRUCTURAL SILICONE SEALANTS

A. Structural Sealant (SSG) Glazing Sealants/Adhesives: Use only structural silicone sealants recommended by joint sealant manufacturer for adhering glass units to metal framing.

B. [Sealant #06]: Single-component, Non-sag, Nonstaining, Low Modulus, Neutral Moisture-curing, Structural Glazing and Weather Seal Silicone Sealant:

1. Compliance:a. ASTM C 920, ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A, O.b. ASTM C 1184, Type S, Use G, O.




(0.002 milligram)/cu. m), per CDPH v1.1.5. Color: [Black] [Tru-White] [Aluminum Stone] [Classic Bronze] [Translucent].6. Design Basis Product: 895NST.

C. [Sealant #07]: Single-component, Non-sag, Medium Modulus, Neutral Moisture-curing, Silicone Structural Glazing Sealant:

1. Compliance:a. ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, G, A, O.b. ASTM C 1184, Type S, Use G, O.





4. Sustainability:a. Volatile Organic Compound (VOC) Content: Less than 100 g/L, per ASTM

D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram

(0.002 milligram)/cu. m), per CDPH v1.1.5. Color: [Black] [Translucent].6. Product: 896FC.

D. [Sealant #08]: Multi-component, Non-sag, High Modulus, Neutral Moisture-curing, Silicone Structural Glazing Sealant:

1. Compliance:a. ASTM C 920, Type M, Grade NS, Class 25, Use NT, G, A, O.b. ASTM C 1184, Type M, Use G, O.

2. Properties:a. Ultimate Tensile Strength: Minimum 200 psi.b. Sealant Design Stress: 20 psi.


4. Color: As selected from manufacturer’s standard range.5. Color: Gray.6. Color: As indicated on Drawings.7. Product: 985.

2.05 SILICONE JOINT SEALANTS

A. [Sealant #09]: Single-component, Non-sag, Low Modulus, Neutral Moisture-curing, Silicone Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 50, Use NT, M, G, A, O.2. Performance: Dynamic movement capability of plus 50 percent or minus 50 percent

per ASTM C 719.3. Color: [As selected from manufacturer’s complete range] [Custom; match

Architect’s sample] [_____].4. Product: PCS.

B. [Sealant #10]: Single-component, Non-sag, Acetoxy Silicone Sealant:1. Compliance: ASTM C 920, Type S, Grade NS, Class 25, Use NT.

a. ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, G, A, O.b. FDA Regulation 21CFR177.2600 for indirect food contact.c. ANSI/NSF Standard 51 for direct food contact.


3. Color: [Black] [Metallic Aluminum] [Tru-White] [Translucent].4. Product: 860.

C. [Sealant #11]: Single-component, Non-sag, Neutral Moisture-curing Silicone Sealant:



1. Compliance: ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, G, A, O (Polyethylene).



(0.002 milligram)/cu. m), per CDPH v1.1.4. Color: Black.5. Product: AVB Silicone.

D. [Sealant #12]: Single-component, Neutral Moisture-curing, Blast- and Impact-resistant, Security Grade, Silicone Sealant:

1. Compliance:a. ASTM C 920, Type M, Grade NS, Class 25, Use NT, G, A, O.b. ASTM C 1184, Type S, Use G, O.

2. Properties:a. Ultimate Tensile Strength: 375 psi per ASTM C 1135.b. Tear Strength: 43 lbf/inch (7.53 kN/m) per ASTM D 624.c. Peel Strength: 45 lb/inch (7.88 N/mm) per ASTM D 794.

3. Performance: Dynamic movement capability of plus 100 percent and minus 50 percent per ASTM C 719.

4. Color: [Black] [Aluminum Stone] [Translucent].5. Product: 896HIS.

E. [Sealant #13]: Single-component, Pourable (Self-Leveling), Ultra-Low Modulus, Neutral Moisture-curing, Traffic Grade, Silicone Sealant:

1. Compliance:a. ASTM C 920, Type S, Grade P, Class 100/50, Use T(1), M, O.b. ASTM D 5893, Type SL.


3. Color: Pavement Grey.4. Product: 300 SL.5. Sealant Backup: Type C.

F. [Sealant #14]: Single-component, Non-sag, Ultra-Low Modulus, Neutral Moisture-curing, Traffic Grade, Silicone Sealant:

1. Compliance:a. ASTM C 920, Type S, Grade NS, Class 100/50, Use T(1), M, O.b. ASTM D 5893, Type NS.


3. Color: Pavement Grey.4. Product: 301 NS.

G. [Sealant #15]: Single-component, Pourable (Self-Leveling), Ultra-Low Modulus, Neutral Moisture-curing, Traffic Grade Silicone Sealant:

1. Compliance:a. ASTM C 920, Type S, Grade P, Class 100/50, Use T(2), M, O.b. ASTM D 5893, Type SL.




3. Color: Limestone.4. Product: 310 SL.

H. [Sealant #16]: Single-component, Non-sag, Ultra-Low Modulus, Neutral Moisture-curing, Traffic Grade Silicone Sealant:

1. Compliance:a. ASTM C 920, Type S, Grade NS, Class 100/50, Use T, M, O.b. ASTM D 5893, Type NS.


3. Color: Limestone.4. Product: 311 NS.

I. [Sealant #17]: Multicomponent, Pourable (Self-Leveling), Ultra-Low Modulus, Neutral Moisture-curing, Traffic Grade Silicone Sealant:

1. Compliance:a. ASTM C 920, Type M, Grade P, Class 100/50, Use T, M, O.b. ASTM D 5893, Type SL.


3. Color: Light Grey.4. Product: 322FC.

2.06 URETHANE JOINT SEALANTS

A. [Sealant #18]: Single-component, Nonsag, Moisture-curing Polyurethane Sealant:1. Compliance: ASTM C 920, Type S, Grade NS, Class 25, Use T, NT, M, G, A, O.2. Performance: Dynamic movement capability of plus 25 percent or minus 25 percent


a. Volatile Organic Compound (VOC) Content: Less than 100 g/L, per ASTM D 3960.

b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram (0.002 milligram)/cu. m), per CDPH v1.1.

4. Color: [As selected from manufacturer’s complete range] [Custom; match Architect’s sample] [_____].

5. Product: DynaTrol I-XL.

B. [Sealant #19]: Multicomponent, Nonsag, Polyurethane Sealant:1. Compliance: ASTM C 920, Type M, Grade NS, Class 50, Use T(1), NT, M, G, A, O.2. Performance: Dynamic movement capability of plus 50 percent or minus 50 percent







5. Product: DynaTrol II.

C. [Sealant #20]: Multicomponent, Nonsag, Chemically-curing Traffic Grade, Polyurethane Sealant:

1. Compliance: ASTM C 920, Type M, Grade P, Class 25, Use T, NT, M, A, O.2. Performance: Dynamic movement capability of plus 25 percent and minus 25

percent per ASTM C 719.3. Color: [As selected from manufacturer’s complete range] [Custom; match

Architect’s sample] [_____].4. Product: One of the following:

a. Urexpan NR-200.b. Dynatrol II-SG.

D. [Sealant #21]: Multicomponent, Nonsag, Chemically-curing, Traffic Grade, Polyurethane Sealant:

1. Compliance: ASTM C 920, Type M, Grade NS, Class 25, Use T, NT, I, M, A, O.2. Properties:

a. Shore A Hardness: 45 to 50 per ASTM C 661.b. Elongation: 250 to 300 percent per ASTM D 412.c. Tensile Strength: 150 to 200 psi (1.03 to 1.37 MPa) per ASTM D 412.

3. Performance:a. Dynamic movement capability of plus 25 percent and minus 25 percent per

ASTM C 719.b. Capable of continuous immersion in liquids when tested in per ASTM C 1247.

4. Sustainability:a. Volatile Organic Compound (VOC) Content: 14 g/L (base), 104 g/L (activator),

per ASTM D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram


Architect’s sample] [_____].6. Product: DynaTred.

E. [Sealant #22]: Multicomponent, Nonsag, Tamper-resistant, Security Grade, Polyurethane Sealant:

1. Compliance: ASTM C 920, Type M, Grade NS, Class 12-1/2, Use T(1), NT, M, O.2. Properties:

a. Shore A Hardness: 55 to 60 per ASTM C 661.b. Elongation: 175 to 200 percent per ASTM D 412.c. Tensile Strength: 300 to 350 psi (2.06 to 2.41 MPa) per ASTM D 412.

3. Performance: Dynamic movement capability of plus 12-1/2 percent or minus 12-1/2 percent per ASTM C 719.

4. Sustainability:a. Volatile Organic Compound (VOC) Content: Less than 100 g/L (base), less

than 25 g/L (activator), per ASTM D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram


Architect’s sample] [_____].6. Product: DynaFlex.



2.07 SILYL-TERMINATED POLYURETHANE (STPU) JOINT SEALANTS

A. [Sealant #23]: Single-component, Nonsag, Moisture-curing Silyl-terminated Polyurethane (STPU) Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 50, Use T, NT, M, G, A, O.2. Performance:

a. Dynamic movement capability of plus 50 percent or minus 50 percent per ASTM C 719.

b. Nonstaining to porous stone per ASTM C 1248.3. Sustainability:



Architect’s sample] [_____].5. Product: DynaTrol I-XL Hybrid.

B. [Sealant #24]: Single-component, Nonsag, Moisture-curing, Traffic Grade, Silyl-terminated Polyurethane (STPU) Sealant:

1. Compliance: ASTM C 920, Type S, Grade P, Class 25, Use T(1), NT, M, A, O.2. Performance: Dynamic movement capability of plus 25 percent or minus 25 percent




4. Color: [As selected from manufacturer’s [standard] [complete] range] [Custom; match Architect’s sample] [_____].

5. Product: Urexpan NR-201.

C. [Sealant #25]: Single-component, Nonsag, Tamper-resistant, Security Grade, Silyl-terminated Polyurethane (STPU) Sealant:

1. Compliance: ASTM C 920, Type S, Grade NS, Class 12-1/2, Use T(1), NT, M, O.2. Properties:

a. Shore A Hardness: 55 to 60 per ASTM C 661.b. Elongation: 225 percent per ASTM D 412.c. Tensile Strength: 250 psi (1.72 MPa) per ASTM D 412.

3. Performance: Dynamic movement capability of 12-1/2 percent in extension and compression per ASTM C 719.



Architect’s sample] [_____].6. Product: DynaFlex SC.

2.08 POLYSULFIDE JOINT SEALANTS

A. [Sealant #26]: Multicomponent, Non-sag, Polysulfide Sealant:



1. Compliance: ASTM C 920, Type M, Grade NS, Class 50, Use T and NT, I, M, G, A.a. Exception: Staining and color change per ASTM C 510.

2. Performance:a. Dynamic movement capability of plus 25 percent and minus 25 percent per

ASTM C 719.b. Capable of continuous immersion in liquids per ASTM C 1247.c. Capable of [continuous] [intermittent] exposure to <insert chemical>, based

on joint sealant manufacturer’s recommendations.3. Color: Dark grey.4. Product: Synthacalk GC2+.

2.09 BUTYL JOINT SEALANTS

A. [Sealant #27]: Single-component, Butyl-Rubber-Based Sealant:1. Compliance: ASTM C 1311.2. Performance: Dynamic movement capability of 7-1/2 percent in extension and

compression per ASTM C 719.3. Color: As selected from manufacturer’s standard range.4. Product: BC-158.

B. [Sealant #28]: Single-component; Non-skinning, Non-hardening Butyl Sealant:1. Performance: Effectively reduces airborne sound transmission through perimeter

joints and openings in building construction per ASTM E 90 based on installation per ASTM C 919.2. Color: Gray.3. Product: BA-98.

2.10 LATEX JOINT SEALANTS

A. [Sealant #29]: Single-component, Siliconized Acrylic Latex Sealant; Paintable:1. Compliance: ASTM C 834, Type OP, Grade NF.2. Performance: Dynamic movement capability of 7-1/2 percent in extension and

compression per ASTM C 719.3. Sustainability:



Architect’s sample] [_____].5. Product: AC-20+ Silicone.

B. [Sealant #30]: Single-component, Siliconized Acrylic Latex Sealant; Acoustical; Paintable:

1. Compliance: ASTM C 834, Type OP, Grade NF.2. Performance:

a. Dynamic movement capability of 7-1/2 percent in extension and compression per ASTM C 719.

b. Effectively reduces airborne sound transmission through perimeter joints and openings in building construction as determined per ASTM E 90 based on installation per ASTM C 919.

3. Sustainability:a. Volatile Organic Compound (VOC) Content: 15 g/L, per ASTM D 3960.





5. Product: One of the following:a. AC-20 FTR.b. AIS-919.

C. [Sealant #31]: Single-component, Siliconized Acrylic Latex Sealant; Paintable:1. Compliance:

a. ASTM C 834, Type OP, Grade NF.b. ASTM C 920, Type S, Grade NS, Class 25, Use NT, M, G, A, O.

2. Performance: Dynamic movement capability of 25 percent in extension and compression per ASTM C 719.

3. Sustainability (AVW-920):a. Volatile Organic Compound (VOC) Content: 15 g/L, per ASTM D 3960.b. Total Volatile Organic Compound (TVOC) Emissions: Less than 2 microgram

(0.002 milligram)/cu. m), per CDPH v1.1.4. Product: One of the following:

a. AVW-920.b. Tilt Seal.

2.11 EPOXY JOINT SEALANTS

A. [Sealant #32]: Multicomponent, Tamper-proof, Security Grade Epoxy Resin Sealant:1. Compliance: ASTM C 881, Type I and III, Grade 3, Class B and C.2. Properties:

a. Shore D Hardness: 70 per ASTM C 661.b. Compressive Strength: 11,000 psi (75.84 MPa) per ASTM D 695.


4. Product: DynaPoxy EP-1200.

2.12 PRECURED SILICONE EXTRUSIONS

A. [Sealant #33]: Precured, Preformed Silicone Extrusion:1. Description: Precured elastomeric, nonstaining, silicone joint sealant, flat extrusion,

for bonding to substrates.2. Compliance: ASTM C 920, Type S, Grade NS, Class 200/50, Use NT.3. Performance:

a. Dynamic Movement Capability: Plus 200 percent and minus 50 percent per ASTM C 1523.

b. Service Temperature Range: Minus 60 degrees F to 300 degrees F (minus 51 degrees C to 149 degrees F).

4. Extrusion Width: To fit joint widths indicated.5. Surface Treatment: [Smooth] [Matte] [Textured].6. Color: [As selected from manufacturer’s complete range] [Custom; match

Architect’s sample] [_____].7. Product: Sil-Span Preformed Silicone Profiles.

2.13 ACCESSORIES



A. Joint Cleaners: Non-corrosive, non-staining cleaners recommended by manufacturers of sealants and sealant backing materials for Project substrates and sealant backings.

B. Primer: Joint sealant primer recommended by joint sealant manufacturer to promote sealant adhesion and, as determined by results of preconstruction field adhesion testing.

C. Sealant Backup Materials: Nonstaining, flexible, compressible cylindrical material approved by joint sealant manufacturer for applications indicated based on field experience and laboratory adhesion and compatibility testing:

1. Compliance: ASTM C 1330 for following types:a. Type C closed-cell polyethylene backer rod.b. Type O open-cell polyurethane or soft reticulated polyethylene backer rod.c. Type B bi-cellular combination backer rod with open- and closed-cell skin.

2. Size: Oversized 25 to 33 percent greater than joint width.

D. Bond Breaker Tape: Polyethylene tape, approved by sealant manufacturer.

E. Masking Tape: Non-staining, nonabsorbent material compatible with joint sealants and surfaces adjacent to joints.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine joints and joint surfaces to receive sealants. Notify Architect if conditions are not acceptable.

B. Verify joint dimensions are as indicated on Drawings.

C. Verify that joints in [concrete] [and] [masonry] that are to receive rigid joint sealant have cured minimum 28 days.

D. Do not begin surface preparation or sealant application until unacceptable conditions have been corrected.

3.02 PREPARATION

A. Prepare surfaces to receive sealants in accordance with joint sealant manufacturer’s instructions.

B. Existing Joint Sealants: Cut away old and failed joint sealants as close as possible to the joint edge.

C. Remove joint sealants, sealant residue, sealant-backing materials, coatings, water repellants, waterproofing, laitance, form release agents, oil, grease, and other bond-inhibiting substances from joint surfaces to the depth that new sealant backings and joint sealants will be installed. Remove contaminants to expose sound, clean joint substrate materials.

D. Clean joint surfaces by one or a combination of the following methods:



1. Porous Substrates: Clean concrete, masonry, unglazed tile or glass-reinforced concrete by brushing, grinding or mechanical abrading.

2. Non-porous Substrates: Clean metal, glass and other non-porous surfaces using razor knife, followed by solvent wipe.

3. Exterior Insulation and Finish System (EIFS) Substrates: Remove contaminants using method recommended by EIFS manufacturer. Use of abrasive cleaning methods is not permitted.

E. Remove frost, dust, loose particles and other foreign materials from joint substrates by vacuuming or blowing out with oil-free compressed air; make as many passes as required to result in clean joints.

F. Remove rust, mill scale and deteriorated coatings from ferrous metals by wire brush, grinding or sandblasting.

G. Joint Priming: Apply joint sealant primer to sides of joints in accordance with manufacturer’s instructions.

H. Apply masking tape where required to prevent contact of sealant primer or joint sealants with adjoining surfaces. Remove tape immediately after tooling without disturbing joint seal.

3.03 INSTALLATION

A. Apply joint-sealants per ASTM C 1193 and joint sealant manufacturer's instructions.

B. Measure joint dimensions and size joint backers to achieve width-to-depth ratio and surface bond area as recommended by manufacturer.

1. Install joint sealant backings to support sealant during application and to achieve recommended joint depth and proportions.

C. Completely fill joints with sealant and ensure full contact of sealant to sides of joints.

D. Install sealant free of air pockets, foreign embedded matter, ridges or sags.

E. Apply sealant within recommended application temperature ranges. Consult manufacturer when sealant cannot be applied within these temperature ranges.

F. Immediately after sealant application and before skinning or curing begins, tool sealants to form smooth, uniform beads. Tool joints to concave profile.

3.04 INSTALLATION – STRUCTURAL SILICONE SEALANTS

A. Install structural silicone sealants per ASTM C 1401 and manufacturer’s instructions.

B. Thoroughly clean glass and metal framing contact surfaces.

C. Position glass units or panels plumb, level, and aligned with uniform structural glazing and perimeter weather seal joints.



D. Install glazing accessories and apply structural silicone sealant in continuous beads; tool before curing begins.

E. Insure structural silicone sealant completely fills structural glazing joint openings, without voids, and in full contact with joint surfaces.

F. Retain glass units or panels in place until structural silicone sealant is fully cured.

G. Apply weather seal sealants per “Installation” article.

3.05 INSTALLATION – TRAFFIC-BEARING JOINT SEALANTS

A. Vehicular Traffic-bearing Joint Sealants: Recess sealant [1/8-inch (3-mm)] [1/ 4-inch (6-mm)] below pavement surface.

3.06 INSTALLATION – ACOUSTICAL JOINT SEALANTS

A. Seal perimeters, joints and penetrations of sound-rated assemblies in accordance with ASTM C 919.

3.07 INSTALLATION – PRECURED SILICONE EXTRUSIONS

A. Install precured silicone extrusions in accordance with manufacturer's installation instructions.

B. Clean substrates with isopropyl alcohol and prime where field testing indicates need for priming to achieve acceptable adhesion.

C. Apply beads of nonstaining silicone sealant/adhesive to both sides of the joint.

D. Position precured silicone extrusions over joint openings and bed into silicone sealant/adhesive.

E. Using roller, roll and apply uniform pressure continuously along edges to bond precured silicone extrusions to substrate surfaces.

F. Remove excess sealant/adhesive, trim ends and terminate with a cap bead of nonstaining silicone sealant/adhesive.

G. Install precured silicone extrusions with straight edges and without wrinkles, fishmouths and other surface defects.

3.08 FIELD QUALITY CONTROL

A. Field Adhesion Testing: Test installed sealants using one of the following destructive field adhesion tests:

1. ASTM C 1193, Appendix X1.1.2. ASTM C 1521, Method A.3. Perform tests at the following rates for each type of sealant and joint substrate:

a. Ten tests for the first 1000 feet of joint length.



b. One test for each additional 1000 feet of joint length or one test per floor elevation.

4. Arrange for tests to take place in presence of sealant manufacturer’s authorized personnel.

5. Inspect joints for complete fill, absence of voids, sealant dimensions and configurations, and whether sealant adhered to joint substrate during testing or failed and mode of failure (adhesive or cohesive), if any. Include data on pull distance used to test each type of sealant and each joint substrate.

6. Evaluate results to determine if adhesion passes manufacturer’s field adhesion hand pull test criteria.

7. Report on test method used, whether joints were primed, sealants tested, test locations, test dates, adhesion results and percent elongation, whether sealant installation complied with specified requirements, dates sealant was installed and names of sealant installers.

8. Sealants not experiencing adhesive failure will be considered satisfactory. Do not use sealants that do not adhere to joint substrates during testing.

9. Remove and replace failed portions of sealants using same materials and procedures as indicated for original installation.

10. Repair sealants pulled from test joints immediately after evaluation and recording of results; contact original sealant with new sealant.

3.09 CLEANING

A. Remove sealant from adjacent surfaces as application progresses using cleaning materials recommended by joint sealant manufacturer.

3.10 PROTECTION

A. Protect installed joint sealants from damage until fully cured.

3.11 SCHEDULE

A. Exterior Weather Seal Joints in Vertical and Non-traffic-bearing Horizontal Surfaces:1. Control and Expansion Joints in [Cast-in-Place] [and] [Precast] Concrete: [01] [02]

[03] [04] [09] [18] [19] [23] [31].2. Control and Expansion Joints in Masonry: [01] [02] [03] [04] [09] [18] [19] [23] [31].3. Joints between [Cast-in-Place Concrete][,] [Precast Concrete] [and] [Masonry]

and [Hollow Metal Door Frames][,] Metal-framed [Windows][,] [Storefronts][,] [Curtain Walls] [and] [Louvers]: [01] [02] [03] [04] [09] [18] [19] [23] [31].

4. Control, Expansion [and Aesthetic] Joints in Porous Stone: [01] [02] [03] [04] [06].5. Control and Expansion Joints in Metal Wall Panels: [01] [02] [03].6. Control and Expansion Joints in Exterior Insulation and Finish System (EIFS): [01].7. Control and Expansion Joints Greater Than 1-1/2 Inches in Width: [01] [02] [03] [04]

[09] [18] [19].

B. Exterior Metal Lap Joints: [28].

C. Structural Sealant Glazing: [06] [07] [08].

D. Exterior Control, Expansion and Isolation Joints in Traffic-bearing Surfaces:1. Cast-in-Place Concrete Slabs: [13] [14] [15] [16] [17] [20] [21] [24].2. Joints in [Concrete][,] [Brick] [and] [Stone] Paving: [13] [15] [17] [20] [21] [24] [26].



3. Joints in Asphalt Paving: [13] [15] [17] [24] [26]4. Swimming Pool Coping Perimeters: [01] [21] [24].5. Traffic Loops: 24.6. Concrete Paving Subject to Jet Fuel Contact: [13] [14].

E. [Exterior] [and] [Interior] Joints in Horizontal Surfaces Continually Submerged in Water: 26.

F. [Exterior] [and] [Interior] Traffic- and Non-traffic-bearing Chemical Resistant Joints: [26].

G. [Exterior] [and] [Interior] Blast-resistant Joints in Vertical and Horizontal Surfaces: [12].

H. Concealed [Exterior] [and] [Interior] Air, Vapor and Weather Barrier Laps, Terminations and Transitions: [11].

I. Interior Joints in Vertical and Non-traffic-bearing Horizontal Surfaces:1. Dynamic (Moving) Joints: [01] [02] [05] [18] [19] [23].2. Joints Subject to Minimal Movement: [27] [29] [30].

J. Interior Acoustical Joints: [19] [27] [28] [30].

K. Interior Joints in Wet Areas:1. Mildew-resistant: [05] [10].2. FDA-approved for Food Contact: [10].3. USDA-approved for Food Processing: [01] [02] [03] [04] [05] [06] [07] [08] [09] [10]

[11] [12] [13] [14] [15] [16] [24] [26] [27] [32] [33].

L. Interior Joints in Traffic-bearing Surfaces:1. Control and Expansion Joints: [20] [21] [22] [24] [25].2. High Heel Traffic: [22] [25].3. Heavy Equipment Traffic: [22] [25].4. Swimming Pool Coping Perimeters: [01] [21] [24].5. USDA-approved for Food Processing: [13] [15] [18] [23] [24] [26].

M. Concealed Interior [and] [Exterior] Joints with Minimal Movement: [27] [28].

N. Interior and Exterior Tamper-resistant Joints in Vertical and Horizontal Surfaces: [12] [22] [25].

O. Interior and Exterior Tamper-proof Joints in Vertical and Horizontal Surfaces: [32]

P. Interior and Exterior Joints on Animal Side of Animal Enclosures: [22] [25] [32].

Q. Joint Remediation: [33].

END OF SECTION
